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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-28). Data set reviewer(s): Schubert K. (06-02-28); revised.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: variety. Synonyms: Uncinula adunca var. mandshurica (Miura) R. Y. Zheng & G. Q. Chen; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Uncinula mandshurica Miura. Type: Uncinula mandshurica Miura.

Taxonomic Literature: Taxonomic notes: This variety differs from the other varieties by ascomata characters, see below.+ascomata outer wall cells ca. 8-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [471-474] (1987).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Populus laurifolia Ledeb.; Populus, Salicaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, (.095)-.15-.2 mm in diam.. Margin: External filaments present (width mostly not equal throughout, increasing from base to top, apex often somewhat enlarged); uncinate, circinate, or sub-helicoid, 1-2 µm long, 4-12.5 µm in diameter, numerous, 35-100 per mm², growing between the lower and upper hald of the ascocarp, flexuose, thin or moderatly thick (towards the base), not ramified, septate.

Asci: 6-11-(14) asci per ascocarp, indistinctly stipitate, (50)-60-75-(90) µm long, (30)-40-60-(65) µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (4)-6-7 per ascus, ellipsoid or ovoid, (18)-25-28-(30.5) µm long, (10)-12-15-(16) µm wide; septa absent.

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